Revenues - Summary of Disaggregated Revenue by Type and by Segment (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 2,524	$ 2,058
Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,034	651
Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	664	682
Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	400	386
Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	227	203
Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	199
News and Information Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,248	1,241
News and Information Services [Member] | Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	529
News and Information Services [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	576
News and Information Services [Member] | Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	0
News and Information Services [Member] | Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	0
News and Information Services [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	143
Subscription Video Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	565	145
Subscription Video Services [Member] | Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	491
Subscription Video Services [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	57
Subscription Video Services [Member] | Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	0
Subscription Video Services [Member] | Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	0
Subscription Video Services [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	17
Digital Real Estate Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	293	271
Digital Real Estate Services [Member] | Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	14
Digital Real Estate Services [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	31
Digital Real Estate Services [Member] | Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	0
Digital Real Estate Services [Member] | Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	227
Digital Real Estate Services [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	21
Book Publishing [Member]
Disaggregation of Revenue [Line Items]
Revenues	418	$ 401
Book Publishing [Member] | Circulation and Subscription [Member]
Disaggregation of Revenue [Line Items]
Revenues	0
Book Publishing [Member] | Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	0
Book Publishing [Member] | Consumer [Member]
Disaggregation of Revenue [Line Items]
Revenues	400
Book Publishing [Member] | Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues	0
Book Publishing [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 18